Flowserve ISC2SS - Manual (Page 11)

Figure 22
O-ring
11
Gland Gasket
G
11
5 Static Testing
5.1 Flowserve manufacturing typically tests the ISC at 25 psig. A pressure drop
of less than one psi over a one minute time period at 25 psig using a test
set-up with a maximum fluid volume of one cubic foot is acceptable. To
static test the seal, bolt or clamp the seal to a pump seal chamber or other
device which will hold the inner gland up against the gland. Failure to do
this will result in the inner gland unseating from the gland under pressure,
possibly resulting in damage to the inner gland O-ring and also causing a
personal safety risk. Secure the cup point set screws to the stub shaft or
equipment shaft to help prevent deformation of the centering tabs due to
axial loads. Apply pressure at either of the tangential barrier fluid ports,
while plugging the opposite port. If the seal does not pass the static
pressure test, disassemble the seal and inspect for O-ring damage,
as this is the most common cause of static test failure.
6 Installation
6.1 Refer to the ISC Installation Instructions, FIS120, for proper seal installation.
4.18 Install the shaft O-ring 11
into the inside diameter
groove of the sleeve
assembly. (
Figure 22 )
4.19 Adhere the gland gasket G
to the inner gland gasket
surface with a spray
adhesive such as 3M
Super 77
®2 .